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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Saturday, 01 November 2025 · astronomical night 18:49 → 05:20 (10.51 h) · Moon 82% (waxing gibbous) · weather: ERA5 history

M31M31 17:45–18:20: quality 0.1M31 18:20–18:50: quality 0.2M31 18:50–19:00: quality 0.4M31 19:00–23:00: quality 0.5M31 23:00–02:50: quality 0.6M31 02:50–03:10: quality 0.9M31 03:10–04:05: quality 0.8M31 04:05–04:20: quality 0.7M31 04:20–04:35: quality 0.6M31 04:35–04:55: quality 0.5M31 04:55–05:00: quality 0.4observe M31 04:25–05:00M42M42 23:25–23:35: quality 0.3M42 23:35–23:55: quality 0.4M42 23:55–00:10: quality 0.5M42 00:10–00:40: quality 0.6M42 00:40–01:00: quality 0.7M42 01:00–01:10: quality 0.6M42 01:10–02:35: quality 0.7M42 02:35–02:50: quality 0.8M42 02:50–04:55: quality 0.9M42 04:55–05:25: quality 0.8M42 05:25–05:55: quality 0.4M42 05:55–06:30: quality 0.1observe M42 00:35–02:30M45M45 19:50–19:55: quality 0.2M45 19:55–20:10: quality 0.3M45 20:10–20:30: quality 0.4M45 20:30–21:25: quality 0.5M45 21:25–23:05: quality 0.6M45 23:05–02:00: quality 0.7M45 02:00–02:50: quality 0.8M45 02:50–04:05: quality 1.0M45 04:05–05:25: quality 0.9M45 05:25–05:55: quality 0.4M45 05:55–06:30: quality 0.1observe M45 22:40–00:35observe M45 05:00–05:55NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.2NGC 7000 18:50–20:00: quality 0.5NGC 7000 20:00–22:00: quality 0.6NGC 7000 22:00–00:45: quality 0.5NGC 7000 00:45–01:05: quality 0.4NGC 7000 01:05–01:30: quality 0.3observe NGC 7000 18:50–20:45V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.2V1057 Cyg 18:50–20:00: quality 0.5V1057 Cyg 20:00–22:00: quality 0.6V1057 Cyg 22:00–00:45: quality 0.5V1057 Cyg 00:45–01:05: quality 0.4V1057 Cyg 01:05–01:30: quality 0.3observe V1057 Cyg 20:45–22:40M33M33 17:50–18:00: quality 0.1M33 18:05–18:20: quality 0.1M33 18:20–18:50: quality 0.2M33 18:50–20:00: quality 0.4M33 20:00–23:00: quality 0.5M33 23:00–02:00: quality 0.6M33 02:00–02:50: quality 0.7M33 02:50–03:35: quality 0.9M33 03:35–04:20: quality 0.8M33 04:20–04:35: quality 0.7M33 04:35–04:50: quality 0.6M33 04:50–05:05: quality 0.5M33 05:05–05:10: quality 0.4observe M33 02:30–04:25scheduleNGC 7000V1057 CygM45M42M33M4518:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
17:15–18:50 — nothing worth pointing at — 1.58
18:50–20:45 NGC 7000 1.92 0.54
20:45–22:40 V1057 Cyg 1.92 0.56
22:40–00:35 M45 1.92 0.67
00:35–02:30 M42 1.92 0.68
02:30–04:25 M33 1.92 0.81
04:25–05:00 M31 0.58 0.51
05:00–05:55 M45 0.92 0.62
05:55–06:55 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 87 84 00:00–04:30 (good) 89.7° at 22:20 48.9° 0.58
M42 Great Orion Nebula 89 88 00:25–05:25 (good) 42.9° at 03:10 93.1° 1.92
M45 Seven Sisters 100 99 22:50–05:25 (good) 72.5° at 01:25 70.2° 2.83
NGC 7000 North America Nebula 58 55 18:50–01:20 (marginal) 87.3° at 18:35 57.8° 1.92
V1057 Cyg 58 55 18:50–01:20 (marginal) 87.3° at 18:35 57.8° 1.92
M33 Triangulum Pinwheel 90 87 00:15–04:45 (good) 79.1° at 23:10 46.9° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-11-01"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.